<template>
    <div>
         <!-- 面包屑导航 -->
      <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>添加商品</el-breadcrumb-item>
      </el-breadcrumb>
      <!-- 卡片区域 -->
        <el-card>
      <!-- 警告区域 -->
        <el-alert
            title="添加商品信息" type="info" center show-icon :closable="false"> 
        </el-alert>
       <!-- 步骤条 -->
        <el-steps :space="200" :active="activeIndex-0" finish-status="success" align-center>
         <el-step title="基本信息"></el-step>
         <el-step title="商品参数"></el-step>
         <el-step title="商品属性"></el-step>
         <el-step title="商品图片"></el-step>
         <el-step title="商品内容"></el-step>
         <el-step title="完成"></el-step>
        </el-steps>
        <!-- Tab栏切换 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
        <el-tabs :tab-position="'left'" v-model="activeIndex" :before-leave="beforeTabLeave" @tab-click="tabClicked">
        <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
                <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
                <el-input v-model="addForm.goods_price"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
                <el-input v-model="addForm.goods_weight"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
                <el-input v-model="addForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
                <el-cascader
                v-model="addForm.goods_cat"
                :options="catelist"
                :props="cateProps"
                expandTrigger="hover"
                @change="handleChange"></el-cascader>
            </el-form-item>
           
        </el-tab-pane>
        <el-tab-pane label="商品参数" name="1">
            <el-form-item :label="item.attr_name" v-for="item in manyTbData" :key="item.attr_id">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox :label="cb" v-for="(cb,i) in  item.attr_vals" :key="i" border></el-checkbox>
               
            </el-checkbox-group>
            </el-form-item>
        </el-tab-pane>
        <el-tab-pane label="商品属性" name="2">
            <el-form-item :label="item.attr_name" v-for="item in onlyTbData" :key="item.attr_id">
                    <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
        </el-tab-pane>
        <!-- 上传图片的api接口 -->
        <el-tab-pane label="商品图片" name="3">
            <el-upload
            :action="upload"
            :on-preview="handlePreview"
            :on-remove="handleRemove"
            list-type="picture"
            :headers="headersObgj"
            :on-success="handleSuccess">
            <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
        </el-tab-pane>
        <el-tab-pane label="商品内容" name="4">
             <quill-editor v-model="addForm.goods_introduce"></quill-editor>
               <el-button class="quillButton" type="primary" @click="AddDoods">提交商品</el-button>
        </el-tab-pane>
        
    </el-tabs>
    </el-form>
        </el-card>
<!-- 图片展示区域 -->
        <el-dialog
        title="图片预览"
        :visible.sync="previewVisible"
        width="50%"
        >
        
        <img :src="pirviewPath" alt="" class="previewImg">
        </el-dialog>
    </div>
</template>

<script>
import _ from 'lodash'
import { get } from 'http'
import { async } from 'q'
export default {
    data(){
        return {
            activeIndex:'0',
            addForm:{
                goods_name:'',
                goods_price:0,
                goods_weight:0,
                goods_number:0,
                goods_cat:'',
                pics:[],
                goods_introduce:'',
                attrs:[]
            },
            addFormRules:{
                goods_name:[
                    {required:true,message:'请输入商品名称',trigger:'blur'}
                ],
                goods_price:[
                    {required:true,message:'请输入商品价格',trigger:'blur'}
                ],
                 goods_weight:[
                    {required:true,message:'请输入商品力量',trigger:'blur'}
                ],
                 goods_number:[
                    {required:true,message:'请输入商品数量',trigger:'blur'}
                ],
                
            },
            catelist:[],
            cateProps:{
                label:'cat_name',
                value:'cat_id',
                children:'children'
            },
            // 获取动态以数据面板
            manyTbData:[],
            // 获取静态以数据面板
            onlyTbData:[],
            // 图片地址
            upload:'http://127.0.0.1:8888/api/private/v1/upload',
            headersObgj:{
                Authorization:window.sessionStorage.getItem('token')
            },
            pirviewPath:'',
            previewVisible:false
        }
    },
    created(){
        this.getCateList()
    },
    methods:{
        async getCateList(){
           const {data:res} = await this.$http.get(`categories`)
           if (res.meta.status!==200){
               this.$message.error('获取数据失败')
           }
           this.catelist=res.data
           console.log(this.catelist);
           
        },
        // 计量选择器触发。会引起次数据变化
        handleChange(){
            console.log(this.addForm.goods_cat);
            if (this.addForm.goods_cat.length!==3){
                return this.addForm.goods_cat=[]
            }
            
        },
        beforeTabLeave(activeName,oldActiveName){
            // console.log('即将离开的标签页'+activeName);
            // console.log('即将进入的标签页'+oldActiveName);
            // return false
            if(oldActiveName==='0' && this.addForm.goods_cat.length!==3 ){
                this.$message.error('请先选择类别')
                return false
            }
        },
        async tabClicked(){
            // console.log(this.activeIndex);
            if(this.activeIndex==='1'){
               const {data:res} =await this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:'many'}})
               if(res.meta.status!==200){
                   return this.$message.error('获取动态数据列表失败')
               }
               console.log(res.data);
            res.data.forEach(item=> {
                item.attr_vals =
                item.attr_vals.length===0 ? [] :
                item.attr_vals.split(' ')
                
            });
               
               this.manyTbData=res.data
              
               
            }else if(this.activeIndex==='2'){
                const {data:res} =await this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:'only'}})
               if(res.meta.status!==200){
                   return this.$message.error('获取静态数据列表失败')
               }
               console.log(res.data);
          
               this.onlyTbData=res.data
            
               

            }
            
        },
      
        // 图片预览效果
        handlePreview(file){
            console.log(file);
            
            this.pirviewPath=
            file.response.data.url
            this.previewVisible=true
        },
        // 图片删除效果
        handleRemove(file){
            console.log(file);
            // 1.获取将要删除的图片的路径
            const filePash=file.response.data.tmp_path
            // 2.从pics数组中，找到这个图片对应的索引值
            const i= this.addForm.pics.findIndex(x=>x.pic===filePash)
            // 3.调用数组的splice方法，把图片信息对象，从pics数组中移出
            this.addForm.pics.splice(i,1)
            console.log(this.addForm);
            

            
        },
          // ________________________________________分割线_____________________________________________________
        handleSuccess(response){
            console.log(response);
            //1, 拼接得到一个图片信息图像
            const picInfo={pic:response.data.tmp_path}
            // 2将图片信息push到pics数组中去
            this.addForm.pics.push(picInfo)
            console.log(this.addForm);
            
            
        },
        // _____________________________________________________________________________________________
       AddDoods(){
        //    console.log(this.addForm);
           this.$refs.addFormRef.validate(async valid=>{
               if(!valid){
                //    验证表单必选项
                   return this.$message.error('请输入必要的选项!')
               }
            //    执行添加的业务逻辑
            const form =_.cloneDeep(this.addForm)
            form.goods_cat=form.goods_cat.join(',')
            // 处理动态参数
            this.manyTbData.forEach(item=>{
                const newInfo={
                    attr_id:item.attr_id,
                    attr_vals:item.attr_vals.join(' ')

                }
                this.addForm.attrs.push(newInfo)
            })
            // 处理静态数据
             this.onlyTbData.forEach(item=>{
                const newInfo={
                    attr_id:item.attr_id,
                    attr_vals:item.attr_vals

                }
                this.addForm.attrs.push(newInfo)
            })
            form.attrs=this.addForm.attrs
            console.log(form);
            // 发起请求商品

            // 商品的名称必须是唯一的
            const {data:res}=await this.$http.post('goods',form)
            if(res.meta.status!==201){
                this.$message.error('发送数据失败')
            }
                this.$message.success('发送数据成功')
                this.$router.push('/goods')
            
           })
           
       }
       
    
    },
    computed:{
        cateId(){
            if(this.addForm.goods_cat.length===3){
                return this.addForm.goods_cat[2]
            }
        }
    }
    
}
</script>
<style lang="less" scoped>
    // .el-steps {
    //     margin: 15px  0;
    // }
    
.el-checkbox {
    margin: 0 10px 0 0  !important;
}
.previewImg {
    width: 100%;
}
.quillButton {
    margin-top: 15px;
}

</style>
